Aldehydes, Ketones and Carboxylic Acids

Consider the following reaction. [figure] The major product (P) formed is :

1. [figure]
2. [figure]
3. [figure]
4. [figure]

'x' is the product which is obtained by the hydrolysis of prop-1-yne in the presence of mercuric sulphate under dilute acidic medium at 333 K. 'y' is the product which is obtained by the reaction of ethane nitrile with methyl magnesium bromide in dry ether followed by hydrolysis. IUPAC name of product obtained from 'x' and 'y' in the presence of barium hydroxide followed by heating is :

1. 2-Methylpent-4-en-3-one
2. 4-Methylpent-3-en-2-one
3. 4-Methylpent-1-ene
4. 2-Methylpent-3-one

" P " is a hydrocarbon of molecular formula:- C8H14. On ozonolysis, " P " forms "Q". "Q" on treatment with alkali under reflux condition produces "R", which on treatment with I2/NaOH gives a yellow precipitate. Acidification of the solution gives "S". The structure of "S" is given below:- [figure] The correct structure of P is

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Complete the following reaction sequence and give the name of major product 'P'. [figure]

1. 2-Chloropropanoic acid
2. 3-Chloropropanoic acid
3. 1-Chloropropane
4. 2-Chloropropane

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below:

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

An organic compound “x” where molar ratio of C, O and H are equal, on treatment with 50% KOH under reflux followed by acidification produced “y”. The most likely structure of “y” is: [Molar mass of ‘x’ is 58 g mol-1]

1. [figure]
2. CH3-CH=CH-CH=O
3. [figure]
4. [figure]

A molecule (X) with following structure under mild acidic condition is hydrolysed to produce (Y) and (Z). Identify the correct statements about (Y) and (Z). [figure] Choose the correct answer from the options given below :

1. A, B and C Only
2. B and C Only
3. C and D Only
4. A and D Only

Given below are the four isomeric compounds (P, Q, R, S) [figure] Identify correct statements from below. Choose the correct option.

1. C and E only
2. A and E only
3. A, B, D and E only
4. A, C and E only

The correct order of acidic strength of the major products formed in the given reactions, is : Choose the correct answer from the options given below :

1. C > A > D > B
2. A > D > C > B
3. A > D > B > C
4. C > B > A > D

A student is given one compound among the following compounds that gives positive test with Tollens' reagent. [figure] The compound is :

1. B
2. D
3. A
4. C

The unsaturated ether on acidic hydrolysis produces carbonyl compounds as shown below :- [figure] Based on this, predict the solution/reagent that will help to distinguish "P" and "Q" obtained in the following reaction :- CH3-CH=CH-O- CH3 |C=CH2 [ ]H3O P + Q

1. Saturated NaHSO3 solution
2. Fehling solution
3. Lucas reagent
4. 2,4-DNP reagent

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

1. Statement I is true but Statement II is false
2. Both Statement I and Statement II are false
3. Both Statement I and Statement II are true
4. Statement I is false but Statement II is true

'x' is the product which is obtained from propanenitrile and stannous chloride in the presence of hydrochloric acid followed by hydrolysis. 'y' is the product which is obtained from the but-2-ene by the ozonolysis followed by hydrolysis. From the following, which product is not obtained when one mole of 'x' and one mole of 'y' react with each other in the presence of alkali followed by heating?

1. 2-Methylpent-2-enal
2. 2-Methylbut-2-enal
3. 3-Methylbut-2-enal
4. Pent-2-enal

[figure] The correct sequence of reagents for the above conversion of X to Y is :

1. (i) NaOH(aq), (ii) Jones reagent, (iii) H3O+
2. (i) NaOEt, (ii) B2H6/H2O2, (iii) Jones reagent
3. (i) Jones reagent, (ii) NaOEt, (iii) Hot KMnO4/KOH
4. (i) B2H6/H2O2, (ii) NaOEt, (iii) Jones reagent

Which of the following statements are TRUE about Haloform reaction? Choose the correct answer from the options given below :

1. A, B & C Only
2. A, C & E Only
3. B, D & E Only
4. A & C Only

Iodoform test can differentiate between Choose the correct answer from the options given below :

1. A, B & E Only
2. A & D Only
3. A & E Only
4. B, C & E Only

The compound A, C8H8O2 reacts with acetophenone to form a single product via cross-Aldol condensation. The compound A on reaction with conc. NaOH forms a substituted benzyl alcohol as one of the two products. The compound A is :

1. 2-hydroxy acetophenone
2. 4-hydroxy benzaldehyde
3. 4-methyl benzoic acid
4. 4-methoxy benzaldehyde

An organic compound "P" of molecular formula C6H12O3 gives positive iodoform test but negative Tollens' test. When "P" is treated with dilute acid, it produces "Q". "Q" gives positive Tollens' test and also iodoform test. The structure of "P" is :

1. H- O \|C-CH2-CH2- OCH3 |CH-OCH3
2. CH3- O \|C- OCH3 |CH- OCH3 |CH2
3. CH3- O \|C-CH2- OCH3 |CH-OCH3
4. CH3- O \|C- OCH3 | OCH3 |C-CH3

A [(ii) H3O+](i) NaOH B [(ii) H2SO4, ](i) EtOH C 'A' shows positive Lassaigne's test for N and its molar mass is 121. 'B' gives effervescence with aq NaHCO3. 'C' gives fruity smell. Identify A, B and C from the following.

1. [figure]
2. [figure]
3. [figure]
4. [figure]

When [figure] undergoes intramolecular aldol condensation, the major product formed is :

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Which of the following compounds is least likely to give effervescence of CO2 in presence of aq. NaHCO3?

1. Ph- NH3 Cl
2. [figure]
3. [figure]
4. [figure]

"P" is an optically active compound with molecular formula C6H12O. When "P" is treated with 2,4-dinitrophenylhydrazine, it gives a positive test. However, in presence of Tollens' reagent, "P" gives a negative test. Predict the structure of "P".

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Aldol condensation is a popular and classical method to prepare , -unsaturated carbonyl compounds. This reaction can be both intermolecular and intramolecular. Predict which one of the following is not a product of intramolecular aldol condensation?

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Which among the following compounds give yellow solid when reacted with NaOI/NaOH? Choose the correct answer from the options given below :

1. (A) and (C) Only
2. (C) and (D) Only
3. (B), (C) and (E) Only
4. (A), (C) and (D) Only

Number of molecules from below which cannot give iodoform reaction is : Ethanol, Isopropyl alcohol, Bromoacetone, 2-Butanol, 2-Butanone, Butanal, 2-Pentanone, 3-Pentanone, Pentanal and 3-Pentanol.

1. 4
2. 3
3. 5
4. 2

The major product (P) in the following reaction is : Ph- O \|C- O \|C-H [ ]KOH Major ProductP

1. Ph- O \|C-COO K
2. Ph- OH |CH-CH2OH
3. Ph- OH |CH-COO K
4. Ph- O \|C-CH2OH

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below :

1. Statement I is correct but Statement II is incorrect
2. Both Statement I and Statement II are correct
3. Both Statement I and Statement II are incorrect
4. Statement I is incorrect but Statement II is correct

Consider the following molecules: [figure] The correct order of rate of hydrolysis is :

1. p > q > r > s
2. r > q > p > s
3. p > r > q > s
4. q > p > r > s

Consider the following reactions. From these reactions which reaction will give carboxylic acid as a major product? Choose the correct answer from the options given below:

1. A, B and E only
2. A and D only
3. B, C and E only
4. B and E only

The product (P) formed in the following reaction is : [figure]

1. [figure]
2. [figure]
3. [figure]
4. [figure]